Packing



.Emo

l. E. MASTEN PACKING original Filed Aug. 4 1920 W/TNESS eaaaa .aa r,ieaa natten ananas CHARIII I. E. MASTIN, OF MIDLAND PARK, NEW JEESEY.

Panama.

original application med August t,

' ber 5, 1921.

Toall whom 'it may concern:

Be it known that I, CHARLES I. E. MASTIN,

a cit'izen of the United States, residing atV Midland Park, in thecounty of Bergen and State of New Jersey, have invented certain new anduseful Improvements in Backings, of which the following is aspecifi'caation.

This invention relates to packing materials, and 'particularly packingtmaterials formed elongated and used for purposes where one of thepacked parts moves relatively to the other, as a piston rod inwitsgland, and it is therefore necessary or desirableto provide the packingwith means to resist wear or other undesirable results incident to suchmovement. My object is to rovide an elongated packing-which is weladapted for use, for example, as a packing of the particular kind aboveindicated and which will have a high de ee of flexibility,` so that itmay beW enter in packing relation to the parts to be packed with thegreatest possible facility. A further object is to improve, especiallyby simplifying, the art of manufacturi-ng elongated packings, whetherhaving wear-reresistingV means or not.

This apfplication is a division of my ap" plication or Patent No.1,473,597.

The drawing illustrates, in

Figure 1 m method of formin the packing, the condition of the materiaemployed belng shown at two difierent stages in the method; f

Figure` 2 one of the pieces produced by a severing Operation performedin plane 2-2 in Fig-1; and' Figure 3 the said piece after compressingthesame in a vulcanizing mold.

lln the illustrated embodiment e designates a plurality of flexiblecores arranged parallel to and in longitudinal contact with eachpother,each core consisting of a fabric sheet impregnated, coated or otherwisetreated with rubber and then rolled up from 4 one edge to the other in acompact mass or 1920, Serial NO. 431,146.

erial No. 520,197.

Divided and this application file Decemcomposed of material moreyielding than I arranged as explained with reference to the cores,aflsheet of suitable material, as fabric h impregnated, coated orotherwise treated with rubber, is wrapped around the mass formed. Itwill be noted that, on account of the salience (convexity) presented byeach core to the other, there will be formed opposite crevices when theyare assembled as described. The constituents of the mass are adhesivelyjoined together due to the presence of rabber therein.

Then the mass is severed in a plane indicated by 2-2 in'Fig. 1, i. e.,between the two cores, producing two packing pieces, one of which isshown 'in Fig. 2. This leaves bent or arched wear-resisting wires orwire pieces i embedded in each piece, the ends of which are exposed atthe working face j of the piece; it also leaves edge-portions on thepiece which are spaced from the pressure producing a closing-up of the'crevices Vas the result of its being exerted substantially parallel withthe plane of severing as well as in a direction peri pendiculaf to saidplane and compressing thepiece into a compact mass so as to insure theintegrity and stability of the whole and leaving the working face' lathereof an uninterrupted surface. Figure 3 shows the vulcanized andcompressed product.

Heving thus fully described m invention, what I claim as new and esireto secure by Letters Patent is z- 1. The method of formingsimultaneously two elongated packings each having a longitudinal workingface composed in part of material which consists in forming an elongatedmass whose constituents are adhesively joined together and includingcoils arranged around a common axis extending longitudinally of the massand side by side and alternating ones of Which are composed ofwear-resisting material and the remainder of material more yielding thanthe wear-resisting material, and then severing the mass lengthwise in aplane bisecting the coils.

2. The method of forming simultaneously two elongated packings eachhaving a longitudinal working face composed in part of Wear-resistingmaterial and in part of ma-` terial more yielding than thewear-resisting material Which consists in forming an elongated masswhose constituents are adhesively joined together and including a pairof cores arranged side by side and substantially parallel and coilsarranged transversely around said cores side by side and alternatingones of Which are composed of `wear-resisting material and the remainderof material more yielding thanthe wear-resisting material, and thensevering the mass in a plane between the two cores.

3. The method of lforming an elongated packing Which consists inwrapping flexible 'material transversely around two elongated' coresplaced side by side and parallel and one of which is composed ofcompressible material and'has a longitudinal salient face presented tothe other and forming there- With opposite longitudinal crevices, one ofsaid materials containing rubber, then severing the Wrapped fiexiblematerial in a plane between the two cores 'to form two elongated pieces,and then subjecting the piece containing` the core With the salient faceto heat and simultaneously to compression in a direction substantiallyparallel With the plane of severing, whereby to close up thehalf-crevices left in said piece.

4. A packing including a body of yielding' material having a working,rface, and bent wear-resisting wires embedded in the body and each havingboth ends thereof exposed at said face.

5. A packing including a body of yielding material having a workingface, and arched Wear-resisting Wires embedded in the body and eachhaving both ends thereof `exposed at said face.

6. A packing including an elongated body of yielding material having alongithe Wires.

In testiinonv Whereof I afii my 1 nature.

CHARLES I. E. MAgTIN.

rtions of said body being interposed between

